If you are writing about this version today, it's worth noting how the software has evolved into the current Soundtoys 5 bundle :
SoundToys: Crystallizer
You will never receive bug fixes, new features (like Apple Silicon native support), or compatibility updates. SoundToys has released dozens of improvements since v4.0.2. You’d be stuck with decade-old code. SoundToys.TDM.VST.RTAS.AU.v4.0.2.OSX.INTEL-XVX.dmg
: Used for high-end Pro Tools systems that ran on dedicated DSP (Digital Signal Processing) cards rather than the computer's CPU. If you are writing about this version today,
Released in the late 2000s and early 2010s, Soundtoys v4 was a comprehensive collection of audio effects plugins. At the time, the "XVX" suffix in many file names referred to the groups that archived and distributed software during the transition from PowerPC to Intel-based Macs. This version supported multiple formats: : Used for high-end Pro Tools systems that
The standard formats for most other Digital Audio Workstations (DAWs) like Ableton Live, Logic Pro, and Cubase.